Boys' Secondary Sex Characteristics
Article Body
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The testicles begin to enlarge, and the scrotum turns darker and coarser |
10 to 13 |
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Pubic hair begins to grow |
10 to 15 |
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The body grows taller and heavier |
10 to 16 |
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The penis begins to grow longer and fuller |
11 to 15 |
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The voice begins to deepen |
11 to 15 |
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Boys become fertile, meaning they are capable of ejaculating semen |
11 to 17 |
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Hair begins to grow under the arms and on the face |
12 to 17 |
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Glands in the skin and scalp begin to produce more oil, which can cause skin blemishes |
12 to 17 |
- Last Updated
- 5/11/2013
- Source
- Caring for Your Teenager (Copyright © 2003 American Academy of Pediatrics)
The information contained on this Web site should not be used as a substitute for the medical care and advice of your pediatrician. There may be variations in treatment that your pediatrician may recommend based on individual facts and circumstances.
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